A hiker and her dog on a trail at Mount Galbraith Park in Golden. The online Colorado Trail Explorer gives people trying to get outdoors information about what is allowed on trails, including whether dogs are welcome.

After two years of intensive planning, Gov. John Hickenlooper on Friday will unveil a comprehensive online map of more than 39,000 miles of trails across Colorado.

Spanning 226 jurisdictions, the interactive map — at cpw.state.co.us/cts — marks the first run at gathering every hiking, biking and multi-use trail in Colorado in a single location. For years that trail info has been stitched across a patchwork of websites, field offices and guidebooks.

The Colorado Trail Explorer, developed by Colorado Parks and Wildlife, includes 17,099 trails and 1,431 trailheads. The mapped trails include 5,683 miles of hiking trails, 6,821 miles of mountain biking trails, 24,906 miles of motorized trails and unpaved roads, and 1,746 miles of paved bike trails.